CN203567414U - Multifunctional ruler for drawing teaching - Google Patents

Abstract

The utility model relates to a ruler for multifunctional drawing teaching, which belongs to the field of drawing instruments. It consists of upper and lower main rulers, auxiliary rulers, hand-tightened nuts, first to third bolts, clamps, small magnetic pieces, ring magnets and strings. The upper and lower main scales take the first bolt as the center of the circle to form the two sides of the rotatable pair; the upper main scale is provided with a sliding groove, and the auxiliary scale is rotatably fixed in the sliding groove through the second bolt; the lower main scale is rotatably fixed in the sliding groove. There is a radius chute, and the fixture is movably fixed in the radius chute of the lower main ruler through the third bolt; the small magnetic piece and the ring magnet are arranged on the back of the upper and lower main ruler; the two ends of the string are respectively fixed on the first bolts and clamps. It simplifies the drawing operation steps and realizes the drawing function of commonly used vector graphics; it is convenient to hold, easy to operate, easy to fold, and can realize the function of adsorbing and fixing the teaching ruler on the whiteboard and stably positioning it. The invention can be widely used in the field of design and manufacture of teaching drawing instruments.

Description

Multi-function drawing teaching ruler

technical field

The utility model belongs to the field of drawing instruments, in particular to a multifunctional vector drawing teaching ruler used for teaching.

Background technique

At present, teaching rulers are divided into wooden rulers, plastic rulers, aluminum rulers, iron rulers, etc. from the material. In terms of function, there are single-function triangular plates and compasses, and there are also rulers with auxiliary functions. For example, various sizes of polygons, arcs, arrows and other model grooves are cut out on the ruler to facilitate vector graphics drawing and measurement. Install a pencil sharpener, compass, etc.

In daily teaching and learning, the existing rulers have been able to achieve their due functions, but it is inevitable that there are some problems with the above-mentioned rulers:

First, the traditional wooden teaching ruler is easy to age due to wooden materials, resulting in certain drawing errors;

Second, the wooden ruler is too bulky, not suitable for hand holding, and inconvenient for positioning;

Third, usually a ruler can only perform one function. When it comes to trigonometry, measuring angles, drawing circles and other functions, it is necessary to use a set square, protractor, and compasses to complete the functions;

Fourth, the multi-functional student ruler still stays at the stage where the groove of the discontinuous size model is the main realization form, and the size of the ruler surface is limited, and the natural models also have quantity and size restrictions;

Fifth, usually because the traditional ruler has single functions and is independent of each other, drawing arcs, drawing angles, and measuring must be carried out in steps when drawing, which delays time;

Sixth, with the improvement of teaching equipment, some classrooms have replaced blackboard teaching with whiteboards, and multifunctional teaching rulers that can match the characteristics of whiteboards are still rare.

Utility model content

The technical problem to be solved by the utility model is to provide a multifunctional teaching ruler for drawing, which overcomes the problems of the existing teaching ruler with single structure and function, the edge of the ruler plate is easy to wear and deform, and it is impossible to realize vector drawing with infinite dimensions. Not only can it achieve long-term repeated drawing of commonly used vector graphics, but it can also break the limitations of the original multi-functional ruler template.

The technical scheme of the utility model is to provide a multifunctional teaching ruler for drawing, which is characterized in that: the multifunctional teaching ruler for drawing is composed of an upper main ruler (1), a lower main ruler (2), and an auxiliary ruler (3), thumb nut (4), first to third bolts (5), (6), (8), clamp (7), small magnet (9), ring magnet (10) and string (11) COMPOSITION.

Wherein, the head ends of the upper main ruler (1) and the lower main ruler (2) are two semicircular structures that can be engaged, and at the center of the two semicircular structures, a hand-tightened nut (4) and a first bolt are arranged. (5), under the limit of the first bolt (5), the upper main scale (1) and the lower main scale (2) take the first bolt (5) as the center of the circle to form the two sides of the rotatable motion pair; The upper main ruler (1) is provided with a sliding groove, and the auxiliary ruler (3) is rotatably fixed in the sliding groove through the second bolt (6); the lower main ruler (2) is provided with There is a radius chute, and the clamp (7) is movably fixed in the radius chute of the lower main scale (2) through the third bolt (8); the small magnetic piece (9) and the ring magnet (10) It is arranged on the upper main ruler (1) and the lower main ruler (2) on the other side opposite to the side where the thumb nut (4) is located, and the small magnetic piece (9) is arranged on the upper main ruler (1 ) and the tail end of the lower main ruler (2), the ring magnet (10) is arranged at the center of the two semicircular structures at the head ends of the upper main ruler (1) and the lower main ruler (2); the thin rope (11 ) are respectively fixed on the first bolt (5) and the clamp (7).

Further, on the semicircle structure at the head ends of the upper main scale (1) and the lower main scale (2), there are angle scales.

The scale of the measured angle is the scale of the angle measurement unit.

Specifically, the secondary ruler (3) is rotatably fixed in the sliding groove with the second bolt (6) as the center of a circle.

The upper main ruler (1) and the lower main ruler (2) are plexiglass scales, and at least one side of the upper main ruler (1) or the lower main ruler (2) is provided with a length measuring unit scale.

One end of the clamp (7) is set and fixed on the third bolt (8), and the other end is provided with an insertion hole for fixing the nib.

Compared with the prior art, the utility model has the advantages of:

1. The upper and lower main rulers can be rotated and folded, and the rotating parts are two semicircles that can be meshed. They carry a measuring angle scale. The upper and lower main rulers are opened at a certain angle, and the angle can be read according to the semicircle edge indication. The upper and lower main rulers are completely It is in the shape of a long ruler after being unfolded, and it is convenient to carry after being folded;

2. The sub-ruler can be rotated and moved through the connection. When drawing a triangle, the third side of the triangle besides the two sides of the main ruler can be used to draw a triangle, and it can also be adjusted to be parallel to the main ruler to draw parallel lines;

3. By setting the ring magnet and the small magnetic sheet, it can cooperate with the magnetic characteristics of the existing teaching whiteboard, and realize the function of absorbing and fixing the entire teaching ruler on the whiteboard and stably positioning it;

4. With the help of the rotating structure of the upper and lower main rulers and the matching structure of the auxiliary ruler and the sliding groove, the infinite transformation can be realized to draw circles and arcs. When drawing, the angle can be read directly, and there is no need to draw triangles and parallel lines step by step, thereby simplifying The drawing operation steps are clarified;

5. By using the strings whose two ends are respectively fixed on the first bolt and the clamp, it has the auxiliary function of drawing an ellipse, and then realizes the drawing function of commonly used vector graphics.

Description of drawings

Fig. 1 is the front structural representation of the utility model;

Fig. 2 is the local structure schematic diagram of clamp of the present utility model;

Fig. 3 is a schematic diagram of the back structure of the utility model.

In the figure, 1 is the upper main ruler, 2 is the lower main ruler, 3 is the auxiliary ruler, 4 is the hand screw nut, 5, 6, 8 are the first to third bolts, 7 is the clamp, 9 is the small magnetic piece, 10 Be ring magnet, 11 is string.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

In Fig. 1, the multifunctional drawing teaching ruler provided by the technical solution of the utility model consists of an upper main ruler (1), a lower main ruler (2), an auxiliary ruler (3), a hand screw nut (4), and a second One to the third bolt (5), (6), (8), clamp (7), small magnetic sheet (9), ring magnet (10) and string (11) constitute.

Wherein, the head ends of the upper main ruler (1) and the lower main ruler (2) are two semicircular structures that can be engaged, and at the center of the two semicircular structures, a hand-tightened nut (4) and a first bolt are arranged. (5), under the limit of the first bolt (5), the upper main scale (1) and the lower main scale (2) take the first bolt (5) as the center of the circle to form the two sides of the rotatable motion pair; The upper main ruler (1) is provided with a sliding groove, and the auxiliary ruler (3) is rotatably fixed in the sliding groove through the second bolt (6); the lower main ruler (2) is provided with There is a radius chute, and the clamp (7) is movably fixed in the radius chute of the lower main scale (2) through the third bolt (8); the small magnetic piece (9) and the ring magnet (10) It is arranged on the upper main ruler (1) and the lower main ruler (2) on the other side opposite to the side where the thumb nut (4) is located, and the small magnetic piece (9) is arranged on the upper main ruler (1 ) and the tail end of the lower main ruler (2), the ring magnet (10) is arranged at the center of the two semicircular structures at the head ends of the upper main ruler (1) and the lower main ruler (2); the thin rope (11 ) are respectively fixed on the first bolt (5) and the clamp (7).

Further, on the semicircle structure at the head ends of the upper main scale (1) and the lower main scale (2), there are angle scales.

The scale of the measured angle is the scale of the angle measurement unit.

Specifically, the secondary ruler (3) is rotatably fixed in the sliding groove with the second bolt (6) as the center of a circle.

The upper main ruler (1) and the lower main ruler (2) are plexiglass scales, and at least one side of the upper main ruler (1) or the lower main ruler (2) is provided with a length measuring unit scale.

It can be seen from the figure that the upper main ruler (1) and the lower main ruler (2) can be rotated and folded, and the rotating parts are two semicircles that can be meshed, carrying the measuring angle scale, opening a certain angle, and reading the angle according to the indication of the semicircle edge. When fully unfolded, it grows into a ruler shape, and when folded, it is convenient to carry.

The auxiliary scale (3) is connected with the upper main scale (1) by bolts (6), and can be rotated and moved. When drawing as a triangle, it constitutes the third side of the triangular row except the two sides of the upper and lower main scales (1) and (2). , and can form a parallel line with the lower main ruler (2) at a certain position.

The hand-tightened nut (4) and the bolt (5) are connected to the main scale and the ring magnet to adjust the tightness.

The clamp (7) is connected with the chute of the lower main ruler through the bolt (8) to fix the nib, and can slide on the chute to adjust the radius of the drawn arc.

String (11) two ends are respectively fixed on the rotation place of upper and lower main chi (1) and (2) and on the radius chute fixture (7), rely on the sliding of string (11) with pen, can draw ellipse.

Since the material of the upper and lower main rulers is plexiglass, it is not easy to wear and tear, and the upper and lower main rulers can be rotated and folded, and the rotation points are two semicircles that can be engaged. After fully unfolded, they grow into a ruler shape and are convenient to carry after being folded.

Its auxiliary ruler can be rotated and moved through the connection, and when drawing a triangle as the third side of the triangle except the two sides of the upper and lower main rulers to draw a triangle, it can also be adjusted to be parallel to the main ruler to draw parallel lines.

Its hand-tightened nut is connected with the first bolt at the rotation position of the two main rulers, the rotation angle can be fixed by tightening, and the rotation angle can be adjusted by loosening.

The ring magnet is connected to one side of the main ruler by bolts, and can be adsorbed on the whiteboard by magnetic force to realize the function of fixing and hanging the ruler.

As shown in the figure, there are two small magnetic sheets, each of which is placed at the tail end of the upper and lower main rulers, which is convenient for fixing the position of the ruler board on the whiteboard when drawing, and also helps to fold.

The two ends of the string are respectively fixed on the rotary connection of the two main rulers and the radius chute fixture, and the ellipse is drawn by using the basic principle of drawing an ellipse (the distance from a point on the ellipse to the two focal points is constant).

In Fig. 2, the clamp (7) is movably fixed in the radius chute of the lower main ruler (2) through the third bolt (8), and one end of the clamp (7) is fitted and fixed on the third bolt (8) , the other end of which is provided with an insertion hole for fixing the nib.

The clamp is used to slide on a chute that provides radius variation for drawing circles and holds the pen tip while drawing an arc.

In Fig. 3, the small magnetic piece (9) and the ring magnet (10) are arranged on the other side (i.e. the back side) on the upper main scale (1) and the lower main scale (2), and The side where the hand-tightened nut (4) is located (that is, the so-called front side) is arranged oppositely, and the small magnetic piece (9) is arranged on the tail end of the upper main ruler (1) and the lower main ruler (2), so The ring magnets (10) described above are arranged at the centers of the two semicircular structures at the head ends of the upper main scale (1) and the lower main scale (2).

The ring magnet uses its magnetic adsorption force to form a magnetic adsorption fixed relationship with the commonly used teaching writing whiteboard.

Its small magnetic sheet (10) is respectively placed on the tail end of the upper and lower main rulers, which is convenient for fixing the position of the ruler on the whiteboard when drawing, and also helps to fold.

Because the utility model adopts the rotating structure of the upper and lower main rulers and the matching structure of the auxiliary ruler and the sliding groove, it can realize stepless transformation to draw circles and draw arcs, thereby simplifying the drawing operation steps; the rotatable auxiliary ruler and the upper and lower The lower main ruler cooperates to draw triangles, and can also be adjusted to be parallel to the main ruler to draw parallel lines; the use of string structure realizes the auxiliary function of drawing ellipses, and then realizes the drawing function of commonly used vector graphics; set ring magnets and small The magnetic sheet can realize the function of adsorbing and fixing the entire teaching ruler on the whiteboard and stably position it; it realizes stepless size vector drawing, which can not only realize the long-term repeated drawing of commonly used vector graphics, but also break the original multi-functional ruler Many limitations of templates.

The utility model can be widely used in the field of design and manufacture of teaching drawing utensils.

Claims (6)

1. A multifunctional ruler for drawing teaching is characterized in that:

the multifunctional ruler for drawing teaching comprises an upper main ruler (1), a lower main ruler (2), an auxiliary ruler (3), a hand-screwed nut (4), first to third bolts (5), (6) and (8), a clamp (7), a small magnetic sheet (9), an annular magnet (10) and a string (11); wherein,

the head ends of the upper main scale (1) and the lower main scale (2) are of two engageable semicircular structures, the circle centers of the two semicircular structures are provided with hand-screwed nuts (4) and first bolts (5), and the upper main scale (1) and the lower main scale (2) form two sides of a rotatable kinematic pair by taking the first bolts (5) as the circle centers under the limiting of the first bolts (5);

the upper main ruler (1) is provided with a sliding groove, and the auxiliary ruler (3) is rotatably fixed in the sliding groove through a second bolt (6);

a radius chute is arranged on the lower main scale (2), and the clamp (7) is movably fixed in the radius chute of the lower main scale (2) through a third bolt (8);

the small magnetic sheet (9) and the annular magnet (10) are arranged on the other side face, opposite to the side face where the hand-screwed nut (4) is located, of the upper main scale (1) and the lower main scale (2), the small magnetic sheet (9) is arranged at the tail ends of the upper main scale (1) and the lower main scale (2), and the annular magnet (10) is arranged at the circle center of the two semicircular structures at the head ends of the upper main scale (1) and the lower main scale (2);

two ends of the thin rope (11) are respectively fixed on the first bolt (5) and the clamp (7).

2. The multifunctional ruler for teaching drawing as claimed in claim 1, wherein angle scales are provided on the semicircular structures at the head ends of the upper main ruler (1) and the lower main ruler (2).

3. The multifunctional ruler for drawing teaching according to claim 2, wherein said angle measuring scale is an angle measuring unit scale.

4. The multifunctional ruler for teaching drawing according to claim 1, wherein said sub-ruler (3) is rotatably fixed in the sliding groove with said second bolt (6) as a center.

5. A multifunctional ruler for drawing teaching according to claim 1 wherein said upper (1) and lower (2) main scales are plexiglas scales and at least one side of said upper (1) or lower (2) main scale is provided with a length measuring unit scale.

6. A multifunctional ruler for drawing teaching purposes as claimed in claim 1 wherein said clamp (7) is fixed to the third bolt (8) by means of a sleeve at one end and provided with an insertion hole for fixing the nib at the other end.

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